/* Task 1306 — compact insert menu and one continuous lesson composer. */
.operator-topic-update-form .lesson-file-menu-wrap {
  position: relative;
}

.operator-topic-update-form .lesson-file-menu {
  background: #fffdf8;
  border: 1px solid rgba(80, 47, 35, .2);
  border-radius: 12px;
  box-shadow: 0 12px 32px rgba(51, 39, 30, .18);
  display: grid;
  min-width: 210px;
  overflow: hidden;
  padding: .35rem;
  position: absolute;
  right: 0;
  top: calc(100% + .4rem);
  z-index: 20;
}

.operator-topic-update-form .lesson-file-menu[hidden] {
  display: none;
}

.operator-topic-update-form .lesson-file-menu button {
  background: transparent;
  border: 0;
  border-radius: 8px;
  color: #3e342d;
  cursor: pointer;
  font: inherit;
  min-height: 42px;
  padding: .65rem .8rem;
  text-align: left;
  width: 100%;
}

.operator-topic-update-form .lesson-file-menu button:is(:hover, :focus-visible) {
  background: rgba(122, 92, 64, .11);
  outline: 2px solid rgba(111, 77, 49, .38);
  outline-offset: -2px;
}

/* The list is the document surface. Rows remain ordered formset blocks internally. */
.operator-topic-update-form .lesson-block-list {
  background: #fff;
  border: 1px solid rgba(80, 47, 35, .18);
  border-radius: 14px;
  display: flex;
  flex-direction: column;
  gap: 0;
  overflow: hidden;
  padding: .25rem 1rem;
}

.operator-topic-update-form .lesson-author-block {
  background: transparent;
  border: 0;
  border-radius: 0;
  padding: .8rem 0;
  position: relative;
}

.operator-topic-update-form .lesson-author-block + .lesson-author-block:not([hidden]) {
  border-top: 1px solid rgba(80, 47, 35, .1);
}

.operator-topic-update-form .lesson-author-block[data-block-kind="text"] .lesson-author-block-toolbar strong {
  /* The row itself keeps an accessible label; do not repeat “Văn bản” visually. */
  display: none;
}

.operator-topic-update-form .lesson-author-block[data-block-kind="text"] .lesson-author-block-toolbar {
  justify-content: flex-end;
  margin-bottom: .15rem;
  min-height: 0;
}

.operator-topic-update-form .lesson-author-block[data-block-kind="text"] .lesson-author-block-toolbar > span {
  opacity: 0;
  pointer-events: none;
  transition: opacity .15s ease;
}

.operator-topic-update-form .lesson-author-block[data-block-kind="text"]:is(:hover, :focus-within) .lesson-author-block-toolbar > span {
  opacity: 1;
  pointer-events: auto;
}

.operator-topic-update-form .lesson-author-block:not([data-block-kind="text"]) {
  background: rgba(249, 245, 238, .72);
  border-radius: 10px;
  margin: .25rem 0;
  padding: .8rem;
}

.operator-topic-update-form .lesson-author-block:not([data-block-kind="text"]) + .lesson-author-block {
  border-top: 0;
}

.operator-topic-update-form .lesson-author-block[data-block-kind="text"] [data-text-fields] {
  margin-top: 0;
}

.operator-topic-update-form .lesson-dialog-file-preview {
  background: rgba(239, 232, 219, .72);
  border-radius: 10px;
  padding: .75rem;
}

.operator-topic-update-form :is(.lesson-dialog-video-preview, .lesson-dialog-embed-preview) {
  aspect-ratio: 16 / 9;
  border: 0;
  border-radius: 10px;
  display: block;
  margin: .75rem auto 0;
  max-width: 100%;
  width: 100%;
}

.operator-topic-update-form .lesson-dialog-audio-preview {
  display: block;
  margin-top: .75rem;
  max-width: 100%;
  width: 100%;
}

.operator-topic-update-form :is(.lesson-dialog-video-preview, .lesson-dialog-audio-preview, .lesson-dialog-file-preview, .lesson-dialog-embed-preview)[hidden] {
  display: none;
}

@media (max-width: 720px) {
  .operator-topic-update-form .lesson-block-add-actions {
    align-items: stretch;
    display: flex;
    flex-wrap: wrap;
  }

  .operator-topic-update-form .lesson-block-add-actions > * {
    flex: 1 1 145px;
  }

  .operator-topic-update-form .lesson-file-menu {
    left: auto;
    min-width: min(260px, calc(100vw - 48px));
    right: 0;
  }

  .operator-topic-update-form .lesson-block-list {
    padding: .2rem .7rem;
  }

}

@media (prefers-reduced-motion: reduce) {
  .operator-topic-update-form .lesson-author-block-toolbar > span {
    transition: none;
  }
}